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 Catalina/Capri 25/250 Sailor's Forums
 General Sailing Forum
 Mast, SS Screws or SS/Aluminum Rivets		  New Topic  Topic Locked
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bjoye
Navigator

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USA
105 Posts
Initially Posted - 07/28/2017 :  07:57:13  Show Profile
I have the mast down and have replaced the wiring, RF, halyards, lights, exit blocks and sheaves. What I found was every screw was either: frozen, corroded, broken, or missing. I had to drill out a number of them and re-tap, except for a few for which the hole was elongated or otherwise totally ****. Originally I had planned on replacing all with SS machine screws, some with a backing nut, but now I'm reconsidering using SS or Aluminum rivets. For those who have already been there, how did you handle this? Any suggestions ?
"Frayed Knot" 1989 C-25 WK/SR #5878

Davy J
Master Marine Consultant

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USA
1511 Posts
Response Posted - 07/28/2017 :  08:07:08  Show Profile
On any of the hardware I installed, I used machine screws/drilled/tapped and a liberal coat of anti-sieze on the threads.
Davy J


2005 Gemini 105Mc
PO 1987 C25 #5509 SR/SK
Tampa Bay
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islander
Master Marine Consultant

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USA
4024 Posts
Response Posted - 07/28/2017 :  13:01:55  Show Profile
If you go with rivets, A common pop rivet tool will work for the aluminum rivets but for stainless rivets you need a pop rivet tool capable of handling them. I borrowed a heavy duty pop rivet tool from work when I installed the foot pads on my swim ladder.
Scott-"IMPULSE"87'C25/SR/WK/Din.#5688
Sailing out of Glen Cove,L.I Sound


Edited by - islander on 07/28/2017 13:05:38
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pastmember
Master Marine Consultant

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2402 Posts
Response Posted - 07/28/2017 :  13:24:54  Show Profile
Pop rivets should be SS on a mast fittings. I have used both and like both, screws are easier. Taps are easy to use.
Blunt short machine screws, no points or self tappers to mess with anything that might pass by and catch.
Frank Hopper
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Voyager
Master Marine Consultant

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USA
5389 Posts
Response Posted - 07/30/2017 :  19:31:21  Show Profile
If you have your mast down, make sure your sheaves run freely. I checked my sheaves when the mast was down this spring, but once I stepped the mast the main halyard sheave got sticky. I lubed up the halyard with silicone spray and it's "better", but still not ideal. Remember, when your mast is down take the extra time you need to check EVERYTHING. Electrical, RF, topping lift, main and jib halyards, light bulbs, sheaves, windex, wind speed, cables,, physical - like tape and tie wraps....
Easier to do it once than to do it again or up on a ladder or boatswain's chair.
Bruce Ross
Passage ~ SR-FK ~ C25 #5032

Port Captain — Milford, CT
Edited by - Voyager on 07/30/2017 19:32:29
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Notice: The advice given on this site is based upon individual or quoted experience, yours may differ.
The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.